I had to pick up a load of hay last week, and thought we'd be ok with the state of plowing on the driveway. Boy, was I wrong! At the steepest part the truck started slipping, slowly came to a stop, and then started going backwards! Luckily the trailer jackknifed at the curve in our drive, wedging the truck and trailer between the burms on either side. The tractor wasn't big enough to pull them both out and they were at such an angle we couldn't unhitch the trailer. After a few failed rescue attempts, we hooked a little trailer to the tractor and unloaded the whole flatbed. Then the tractor was able to pull the truck out, then the trailer, and all are safely parked in the driveway now. Whew! What a ride.